COOL TROPICAL TEMPERATURES SHIFT THE GLOBAL DELTA-O-18-T RELATIONSHIP- AN EXPLANATION FOR THE ICE CORE DELTA-O-18-BOREHOLE THERMOMETRY CONFLICT

Authors
BOYLE EA
Citation
Ea. Boyle, COOL TROPICAL TEMPERATURES SHIFT THE GLOBAL DELTA-O-18-T RELATIONSHIP- AN EXPLANATION FOR THE ICE CORE DELTA-O-18-BOREHOLE THERMOMETRY CONFLICT, Geophysical research letters, 24(3), 1997, pp. 273-276
Citations number
19
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
24
Issue
3
Year of publication
1997
Pages
273 - 276
Database
ISI
SICI code
0094-8276(1997)24:3<273:CTTSTG>2.0.ZU;2-C
Abstract
The discrepancy between central Greenland borehole temperatures and th e isotopic composition of Last Glacial Maximum ice can be explained by a shift in the delta(18)O-T relationship for the hydrological cycle l inked to cooler tropical temperatures. This concept is illustrated usi ng a simple Rayleigh distillation model. An estimate for alpha=Delta d elta(18)O/Delta T (LGM-Holocene) of -0.37 parts per thousand/degrees C is determined with a simple graphical technique.